电机及其传动系统 原理、控制、建模和仿真课件：Physics of Electric Machines.pptx

PhysicsofElectricMachines

LawsofInductionandInteractionFaraday’slawofinductionChangeinthemagneticfluxcausesinductionofvoltageLawofinteractionAproperly-positionedcurrent-carryingconductorinamagneticfieldexperiencesforce

Lawofinduction–generatoraction

Lawofinteraction–motoraction

Lawofinduction–acloserlook(1)

Lawofinduction–acloserlook(2)

Opposingtorque

Motoraction(1)

Motoraction(2)

Inductionmachineprinciples

Energyconversion(1)

Energyconversion(2)DCexcitation:discretemotion?steppermotorSynchronousmotor

Principlesofenergyconversion(1)

Principlesofenergyconversion(2)EnergybalanceExpandReplaceforvoltagesTotaldifferential

Principlesofenergyconversion(3)Co-energyExpandCompare

Principlesofenergyconversion(4)

Energyconversioninalinearsystem

Calculationoftorqueinalinearsystem

Nonlinearmagneticphenomena(1)

Nonlinearmagneticphenomena(2)NonlinearcoreLinearcore

Nonlinearmagneticphenomena(3)Linearmagneticcircuit

Nonlinearmagneticphenomena(4)Nonlinearmagneticcircuit

Example(1)B(T)00.60.91.021.111.21.251.281.3H(A.t/m)0100200300400500600700800Core:circularcross-section,innerradiusof5cm,outerradiusof6cm.Winding:200turns,sinusoidalvoltageof30V(rms),60Hz,leakageinductanceof10mH,resistanceof1.0W.l(Wb.t)00.00940.0140.0160.01740.01880.01960.020.0204i(A)00.170.340.510.690.861.041.21.38

Example(2)

Inclusionofhysteresis